DHCP Snooping Configuration with Packet Tracer
DHCP Snooping Configuration with Cisco Packet Tracer,
How to COnfigure DHCP Snooping on Routers
Useful Pages on IPCisco.com
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CCNA Course: https://ipcisco.com/course/ccna
Packet Tracer Courses :
https://ipcisco.com/course/cisco-packet-tracer-ccna-labs-adventure-1/
https://ipcisco.com/course/cisco-packet-tracer-ccna-labs-adventure-2/
PACKET TRACER FILES : https://ipcisco.com/cisco-packet-trac…
CHEAT SHEETS : https://ipcisco.com/protocol-cheat-sh…
QUIZES SECTION : https://ipcisco.com/all-quizes/
NETWORK TOOLS : https://ipcisco.com/network-tools/
INTERVIEW QUESTIONS : https://ipcisco.com/technical-interview/
DNS स्नूपिंग कॉन्फ़िगरेशन,
Configurazione snooping DNS,
Configuration de surveillance DNS,
Configuração de espionagem de DNS,
Configuración de inspección DNS,
What is DHCP Snooping?
DHCP is one of the most important protocols for our network. With DHCP we can configure IP configurations of our nodes in the network. This DHCP configurations can be done with various DHCP messages. But sometimes these messages can be used for some malicious attacks. So, what is DHCP Snooping? DHCP Snooping is used on switches to detect such malicious attacks. Basically, DHCP Snooping listens the DHCP messages of “untrusted” ports, records port and device information, according to the verification, it determines the harmful ones and prevent.
In this lesson, we will learn What is DHCP Snooping? And in another lesson, we will configure DHCP Snooping on Cisco Packet Tracer.
How can an Attacker Manuplate DHCP Messages?
Many things! As you know, DHCP Server gives IP configurations to our network devices. Think about it, what if a malicious atttacker gives this IP addresses? If an attacker uses a DHCP software and take over your DHCP messaging, he/she can assign your IP addresses. He/She can do this by replying a DHCP Discover messages earlier than your real DHCP Server. He/she can give his/her IP address as a gateway for you. And then? Your all traffic o through his/her device. This is one of the way that a man-in-the-middle attack occurs.
A DHCP attacker can also manuplate your real DHCP Server’s pool. He/she can send a lot of DHCP Discover messages and get your IP addresses in DHCP Pool. Whenever your DHCP pool exhaust, IP configurations in the network can not be done.
What is the Role of DHCP Snooping?
DHCP Snooping is the inspector and a guardian of our network here. It is configured on switches. It Works as a firewall between DHCP Server and other part of the network. Here, DHCP Snooping tracks all the DHCP Discover and DHCP Offer messages coming from “untrusted” ports.
According to DHCP Snooping, there are two port types. These port types are:
– Trusted Ports
– Untrusted Ports .
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